Hi Prasanna R,
I prepared a sample project illustrating how to implement drag and drop in a RadTreeView populated with a self-referencing flat data collection in Silverlight 3.
Have a look at it and let me know if it works for you.
On a side note, I just like to let you know that with our Q3 2010 release, we discontinued our support for RadControls for Silverlight 3 as announced earlier this year (link
). With this said, l would like to remind you that any further developments or fixes will be not possible in RadControls for Silverlight 3. You can use our SL 3 controls in your project but we would be able to assist you in your development only with workarounds (when possible) and not with built-in functionality or bugfixes.
the Telerik team
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